Work

Force signals time alignment using cross-correlation

Year: 2024

Type: article

Abstract: Calibration of force in measuring systems where the force is time dependent i.e. dynamically changing, introduces additional complexities versus quasi-static calibration conditions. The basic need in the case of time variable force signals is to synchronise the measurement series from unit under test and the measurement series from the reference standard. As they are typically acquired by different measuring systems, post-processing is generally necessary to align the measured samples to try to eliminate the influence of the sample misalignment from the resulting testing machine indication error. The paper focuses on the time alignment of measurement series at testing machine calibration with cyclic force excitation using cross-correlation to determine the necessary time correction. The standard deviation of the error distribution for the two measured signals after time correction was below 0.2 % for 5 kN ± 1 kN cycling force for 1 Hz, 5 Hz, and 10 Hz cycling frequency.

Source: Measurement Sensors

DOI: 10.1016/j.measen.2024.101375

Author: Miha Hiti

Institution: Slovenian National Building and Civil Engineering Institute

Language: English

Topic: Scientific Measurement and Uncertainty Evaluation

Subfield: Statistics, Probability and Uncertainty

Field: Decision Sciences

Domain: Social Sciences

Open Access status: gold

Estimated APC paid: $1,800

Funders: Javna Agencija za Raziskovalno Dejavnost RS, Horizon 2020, European Metrology Programme for Innovation and Research